| Pd/Ti-Al合金复合膜表面缺陷的影响因素 |
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| 引用本文： | 张栋强,陈日志,范益群,徐南平.Pd/Ti-Al合金复合膜表面缺陷的影响因素[J].南京工业大学学报(自然科学版),2012,34(1):1-4,29. |
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| 作者姓名： | 张栋强 陈日志 范益群 徐南平 |
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| 作者单位： | 南京工业大学化学化工学院,材料化学工程国家重点实验室,江苏南京210009 |
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| 基金项目： | 国家自然科学基金资助项目，江苏省高校优势学科建设工程资助项目(PAPD) |
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| 摘 要： | 金属基Pd复合膜在高温下易产生小孔缺陷,目前对造成膜表面小孔缺陷的主要原因尚不清楚。借助环境扫描电镜(SEM)考察了气氛环境、高温烧结以及金属间相互扩散等因素对Pd/Ti-Al合金复合膜表面性能的影响。结果发现:气氛环境、高温烧结和金属间相互扩散都会对Pd复合膜的性能产生一定的影响,但是高温下Pd与Ti-Al合金间相互扩散是Pd/Ti-Al合金复合膜表面小孔缺陷形成的最主要影响因素。
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| 关 键 词： | Pd膜 Ti - Al合金 相互扩散 小孔缺陷 |
Influence factors of surface defects of Pd/Ti-Al alloy composite membranes |
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| ZHANG Dongqiang
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CHEN Rizhi
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FAN Yiqun
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XU Nanping.Influence factors of surface defects of Pd/Ti-Al alloy composite membranes[J].Journal of Nanjing University of Technology,2012,34(1):1-4,29. |
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| Authors: | ZHANG Dongqiang CHEN Rizhi FAN Yiqun XU Nanping |
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| Institution: | (State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Defects were easily formed on the surface of the metal-supported Pd composite membranes at high temperatures.The main factor for causing surface defects was not known.The influences of different atmospheres,sintering and intermetallic diffusion on the surface performance of Pd/Ti-Al alloy composite membranes were investigated by scanning electron microscope(SEM).The results showed that all of these factors had some effects on the performance of Pd/Ti-Al alloy composite membranes,and the intermetallic diffusion between Pd and Ti-Al alloy was main factor for causing surface defects of Pd/Ti-Al alloy composite membranes at high temperatures. |
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| Keywords: | palladium membrane Ti-Al alloys intermetallic diffusion pinhole defects |
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